Bioelectrical impedance vector analysis to evaluate relative hydration status

Bozzetto, Sara; Piccoli, Antônio; Montini, Giovanni

doi:10.1007/s00467-009-1326-3

Cited by 42 publications

(36 citation statements)

References 23 publications

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“…Vectors outside the upper pole of the 75 % ellipse indicate dehydration, whereas others outside the 75 % confi dence ellipse of the lower pole are characteristic of fl uid overload or overhydration. Thus, short vectors with a small PA are associated with edema, whereas longer ones with an increased PA indicate dehydration (86,89,90) . Moreover, vectors above or below the minor axis (meaning upper-left or lower right half of ellipses) are associated with more or less cell mass in soft tissue, respectively, with extremes along the minor axis.…”

Section: Bio-electrical Impedance Vector Analysis (Biva)mentioning

confidence: 99%

The emerging role of biomarkers and bio-impedance in evaluating hydration status in patients with acute heart failure

Somma¹,

Navarin²,

Giordano³

et al. 2012

Clinical Chemistry and Laboratory Medicine (CCLM)

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The quantitative and qualitative estimation of total body fl uid content has proven to be crucial for both diagnosis and prognosis assessment in patients with heart failure. The aim of this review is to summarize the current techniques for assessing body hydration status as well as the principal biomarkers associated with acute heart failure (AHF). Although clinical history, physical examination and classical imaging techniques (e.g., standard radiography and echocardiography) still represent the cornerstones, novel and promising tools, such as biomarkers and bio-electrical impedance are achieving an emerging role in clinical practice for the assessment of total body fl uid content. In the acute setting, the leading advantages of these innovative methods over device are represented by the much lower invasiveness and the reasonable costs, coupled with an easier and faster application. This article is mainly focused on AHF patients, not only because the overall prevalence of this disease is dramatically increasing worldwide, but also because it is well-known that their fl uid overload has a remarkable diagnostic and prognostic significance. It is thereby conceivable that the bio-electrical vector analysis (BIVA) coupled with laboratory biomarkers might achieve much success in AHF patient management in the future, especially for assisting diagnosis, risk stratifi cation, and therapeutic decision-making.

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Section: Bio-electrical Impedance Vector Analysis (Biva)mentioning

confidence: 99%

The emerging role of biomarkers and bio-impedance in evaluating hydration status in patients with acute heart failure

Somma¹,

Navarin²,

Giordano³

et al. 2012

Clinical Chemistry and Laboratory Medicine (CCLM)

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“…La migración del vector de impedancia eléctrica (19,26) indica una doble dirección: hacia abajo y hacia la izquierda, lo cual denota un aumento del líquido corporal o rehidratación y un aumento de la masa grasa, que está en consonancia con los resultados encontrados en nuestras pruebas antropométricas y con la literatura (5). El análisis del vector de impedancia es considerado una buena herramienta para detectar cambios en la hidratación ya que no depende del peso del sujeto y permite la visualización gráfica de cambios tanto de la hidratación como de la masa celular activa (19,26,33,34).…”

Section: Discussionunclassified

Cambios de la composición corporal tras un periodo de desentrenamiento deportivo

Cruz¹,

Ronconi

García-Romero

et al. 2017

Nutr Hosp

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Palabras clave:Composición corporal. Antropometría. Bioimpedancia eléctrica. Desentrenamiento. ResumenIntroducción: la infl uencia del ejercicio físico en sujetos entrenados tiene efectos benefi ciosos en la condición física y la composición corporal. Sin embargo, el desentrenamiento tiene un efecto desfavorable en todas ellas. Objetivo: el propósito del estudio fue analizar los cambios de la composición corporal después de un periodo de desentrenamiento de seis semanas de duración en dos grupos: uno de 43 jóvenes varones jugadores de fútbol (grupo experimental [GE], n = 43), y un grupo control de escolares no activos de la misma edad (grupo control [GC], n = 10). Métodos: las variables de composición corporal fueron evaluadas mediante antropometría, para estimar la masa grasa (MG) y la masa muscular esquelética (MME), y mediciones de bioimpedancia eléctrica, para estimar agua corporal total (ACT), agua extra (AEC) e intracelular (AIC). Las mediciones se realizaron tanto en situación de entrenamiento como de desentrenamiento. Resultados: tras el desentrenamiento, se encontraron diferencias signifi cativas en el ACT (35,5 ± 5,2 vs. 36,7 ± 4,9 kg), el AIC (14,2 ± 1,8 vs. 14,8 ± 1,6 kg) y el AEC (21,5 ± 3,6 vs. 22,0 ± 3,4 kg, p < 0,001 para todas las variables), sin existir diferencias en los ratios AEC/ACT (0,4 ± 0,02 vs. 0,4 ± 0,02) y AIC/ACT (0,6 ± 0,02 vs. 0,597 ± 0,02, ambos p > 0,05). La MG aumentó signifi cativamente (8,6 ± 3,2 vs. 8.95 ± 3,1 kg, p < 0,01); sin embargo, la MME no sufrió modifi caciones (21,2 ± 2,5 vs. 22,22 ± 2,8 kg, p > 0,05) Conclusiones: el principal resultado de este estudio fue que en un periodo de desentrenamiento de seis semanas se observaron aumentos del ACT y de su distribución en el grupo de jóvenes futbolistas. La importancia fi siológica de esta desadaptación en el rendimiento deportivo tiene que ser analizada en futuros estudios. Key words:Body composition. Anthropometry. Bioelectrical impedance analysis. Detraining. AbstractIntroduction: The infl uence of exercise in trained subjects has benefi cial effects in the physical fi tness and body composition; however, detraining has an unfavorable effect in all of them. Objective: The current study was designed to ascertain the infl uence of a six week-detraining period on body composition in both well-trained young soccer players (GE, n = 43) and sedentary male adolescents (GC, n = 10). Methods: Forty-three well-trained soccer players and ten sedentary adolescents accepted to participate in the study. Body composition measurements included fat mass and skeletal muscle mass (SMM), which were estimated by anthropometry. In addition, total body water (TBW), intracellular water (ICW) and extracellular water (ECW) were assessed by bioelectrical impedance analysis (BIA) at the end of training and after detraining periods. Results: After the six-week-detraining period, signifi cant increments were found in TBW (35.5 ± 5.2 vs. 36.7 ± 4.9 kg; p < 0.001), ICW (14.2 ± 1.8 vs. 14.8 ± 1.6 kg; p < 0.001) and ECW (21.5 ± 3.6 vs. 22.0 ± 3.4 kg; p <...

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“…25,26,[30][31][32][33][34][35][36] A negative association between higher diastolic blood pressure and residual renal function has also been reported. 37 Complications associated with overhydration can be asymptomatic.…”

Section: Background and Definition Of The Decision Problem(s)mentioning

confidence: 99%

Multiple-frequency bioimpedance devices for fluid management in people with chronic kidney disease receiving dialysis: a systematic review and economic evaluation

Scotland

Cruickshank

Jacobsen

et al. 2018

Health Technol Assess

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BackgroundChronic kidney disease (CKD) is a long-term condition requiring treatment such as conservative management, kidney transplantation or dialysis. To optimise the volume of fluid removed during dialysis (to avoid underhydration or overhydration), people are assigned a ‘target weight’, which is commonly assessed using clinical methods, such as weight gain between dialysis sessions, pre- and post-dialysis blood pressure and patient-reported symptoms. However, these methods are not precise, and measurement devices based on bioimpedance technology are increasingly used in dialysis centres. Current evidence on the role of bioimpedance devices for fluid management in people with CKD receiving dialysis is limited.ObjectivesTo evaluate the clinical effectiveness and cost-effectiveness of multiple-frequency bioimpedance devices versus standard clinical assessment for fluid management in people with CKD receiving dialysis.Data sourcesWe searched major electronic databases [e.g. MEDLINE, MEDLINE In-Process & Other Non-Indexed Citations, EMBASE, Science Citation Index and Cochrane Central Register of Controlled Trials (CENTRAL)] conference abstracts and ongoing studies. There were no date restrictions. Searches were undertaken between June and October 2016.Review methodsEvidence was considered from randomised controlled trials (RCTs) comparing fluid management by multiple-frequency bioimpedance devices and standard clinical assessment in people receiving dialysis, and non-randomised studies evaluating the use of the devices for fluid management in people receiving dialysis. One reviewer extracted data and assessed the risk of bias of included studies. A second reviewer cross-checked the extracted data. Standard meta-analyses techniques were used to combine results from included studies. A Markov model was developed to assess the cost-effectiveness of the interventions.ResultsFive RCTs (with 904 adult participants) and eight non-randomised studies (with 4915 adult participants) assessing the use of the Body Composition Monitor [(BCM) Fresenius Medical Care, Bad Homburg vor der Höhe, Germany] were included. Both absolute overhydration and relative overhydration were significantly lower in patients evaluated using BCM measurements than for those evaluated using standard clinical methods [weighted mean difference –0.44, 95% confidence interval (CI) –0.72 to –0.15,p = 0.003,I2 = 49%; and weighted mean difference –1.84, 95% CI –3.65 to –0.03;p = 0.05,I2 = 52%, respectively]. Pooled effects of bioimpedance monitoring on systolic blood pressure (SBP) (mean difference –2.46 mmHg, 95% CI –5.07 to 0.15 mmHg;p = 0.06,I2 = 0%), arterial stiffness (mean difference –1.18, 95% CI –3.14 to 0.78;p = 0.24,I2 = 92%) and mortality (hazard ratio = 0.689, 95% CI 0.23 to 2.08;p = 0.51) were not statistically significant. The economic evaluation showed that, when dialysis costs were included in the model, the probability of bioimpedance monitoring being cost-effective ranged from 13% to 26% at a willingness-to-pay threshold of £20,000 per quality-adjusted life-year gained. With dialysis costs excluded, the corresponding probabilities of cost-effectiveness ranged from 61% to 67%.LimitationsLack of evidence on clinically relevant outcomes, children receiving dialysis, and any multifrequency bioimpedance devices, other than the BCM.ConclusionsBCM used in addition to clinical assessment may lower overhydration and potentially improve intermediate outcomes, such as SBP, but effects on mortality have not been demonstrated. If dialysis costs are not considered, the incremental cost-effectiveness ratio falls below £20,000, with modest effects on mortality and/or hospitalisation rates. The current findings are not generalisable to paediatric populations nor across other multifrequency bioimpedance devices.Future workServices that routinely use the BCM should report clinically relevant intermediate and long-term outcomes before and after introduction of the device to extend the current evidence base.Study registrationThis study is registered as PROSPERO CRD42016041785.FundingThe National Institute for Health Research Health Technology Assessment programme.

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Bioelectrical impedance vector analysis to evaluate relative hydration status

Cited by 42 publications

References 23 publications

The emerging role of biomarkers and bio-impedance in evaluating hydration status in patients with acute heart failure

The emerging role of biomarkers and bio-impedance in evaluating hydration status in patients with acute heart failure

Cambios de la composición corporal tras un periodo de desentrenamiento deportivo

Multiple-frequency bioimpedance devices for fluid management in people with chronic kidney disease receiving dialysis: a systematic review and economic evaluation

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